A75.1 Recrudescent typhus [Brill's disease]

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Brill-Zinsser disease

Applies from A75 Typhus fever

Excludes1 (never code together)

• rickettsiosis due to Ehrlichia sennetsu (A79.81)

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 081.1 Brill's disease

Code annotations containing back-references to A75.1

Back-references to A75.1

• Code First: I41 Myocarditis in diseases classified elsewhere ("typhus (A75.0-A75.9)")

Diagnosis Index entries for A75.1

• Brill (-Zinsser) disease (recrudescent typhus)
• Disease, diseased › Brill's (recrudescent typhus)
• Disease, diseased › Brill-Zinsser (recrudescent typhus)
• Infection, infected, infective (opportunistic) › typhus › recrudescent
• Recrudescent typhus (fever)
• Typhus (fever) › due to Rickettsia › prowazekii › recrudescent
• Typhus (fever) › exanthematicus SAI › brillii SAI
• Typhus (fever) › recrudescent

Nearby codes

• A75 Typhus fever
• A75.0 Epidemic louse-borne typhus fever due to Rickettsia prowazekii
• A75.1 Recrudescent typhus [Brill's disease] (this code)
• A75.2 Typhus fever due to Rickettsia typhi
• A75.3 Typhus fever due to Rickettsia tsutsugamushi
• A75.9 Typhus fever, unspecified